The missing children of treewood

Once upon a time a small child called Alina was dropped off at a normally looking orphanage. yet from the inside it was anything but ordinary. kids getting weird powers. like fire bending and healing and children being missing once they reached the age of 15. Once Alina finds out about this secret and once her best friends gets missing she decides to train her powers more and more so she can fight them off. yet her own 15th birthday comes closer and closer and not long after she takes off, running away from the place she called home. what will happen if she passes villages with people she calls hunters coming after. who is to trust and who isn't. and what is happening with this book saying that she has to find the chosen one to fight the shadows?